firewall rules to allow sudo apt-get update
My DO firewall (not UFW) is set up to allow only HTTPS and SSH.
sudo apt-get update
Err:1 http://mirrors.digitalocean.com/ubuntu focal InRelease
Temporary failure resolving ‘mirrors.digitalocean.com’
but is ok when the firewall is disabled
What rules would I add to the firewall to allow 'apt-get update’ ?
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